Commitments and Contingencies Contractual Commitments, Excluding Open Orders for Purchases that Support Normal Operations (Detail) - USD ($) $ in Millions		Dec. 31, 2016		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Total commitments
Year Ended December 31, 2017		$ 8,484
Year Ended December 31, 2018		6,209
Year Ended December 31, 2019		5,490
Year Ended December 31, 2020		2,743
Year Ended December 31, 2021		2,992
Thereafter		17,166
Total		43,084
Capital leases, including interest
Year Ended December 31, 2017	[1]	3,910
Year Ended December 31, 2018	[1]	3,008
Year Ended December 31, 2019	[1]	1,662
Year Ended December 31, 2020	[1]	411
Year Ended December 31, 2021	[1]	190
Thereafter	[1]	225
Total	[1]	9,406
Operating leases
Year Ended December 31, 2017		1,317
Year Ended December 31, 2018		1,231
Year Ended December 31, 2019		1,106
Year Ended December 31, 2020		1,030
Year Ended December 31, 2021		896
Thereafter		3,930
Total		9,510
Unconditional purchase obligations
Year Ended December 31, 2017	[2]	655
Year Ended December 31, 2018	[2]	590
Year Ended December 31, 2019	[2]	303
Year Ended December 31, 2020	[2]	96
Year Ended December 31, 2021	[2]	43
Thereafter	[2]	23
Total	[2]	1,710
Other commitments
Year Ended December 31, 2017	[3],[4]	1,025
Year Ended December 31, 2018	[3],[4]	824
Year Ended December 31, 2019	[3],[4]	621
Year Ended December 31, 2020	[3],[4]	493
Year Ended December 31, 2021	[3],[4]	365
Thereafter	[3],[4]	3,071
Total	[3],[4]	6,399
Excluded tax contingencies		1,710	[5]	$ 1,181	$ 710	$ 407
Debt principal and interest
Total commitments
Year Ended December 31, 2017		1,343
Year Ended December 31, 2018		312
Year Ended December 31, 2019		1,551
Year Ended December 31, 2020		463
Year Ended December 31, 2021		1,246
Thereafter		7,911
Total		12,826
Finance lease obligations, including interest (2)
Total commitments
Year Ended December 31, 2017	[6]	234
Year Ended December 31, 2018	[6]	244
Year Ended December 31, 2019	[6]	247
Year Ended December 31, 2020	[6]	250
Year Ended December 31, 2021	[6]	252
Thereafter	[6]	2,006
Total	[6]	$ 3,233

[1] Excluding interest, current capital lease obligations of $3.0 billion and $4.0 billion are recorded within “Accrued expenses and other” as of December 31, 2015 and 2016, and $4.2 billion and $5.1 billion are recorded within “Other long-term liabilities” as of December 31, 2015 and 2016.

[2] Includes unconditional purchase obligations related to long-term agreements to acquire and license digital media content that are not reflected on the consolidated balance sheets. For those agreements with variable terms, we do not estimate the total obligation beyond any minimum quantities and/or pricing as of the reporting date. Purchase obligations associated with renewal provisions solely at the option of the content provider are included to the extent such commitments are fixed or a minimum amount is specified.

[3] Excludes $1.7 billion of accrued tax contingencies for which we cannot make a reasonably reliable estimate of the amount and period of payment, if any.

[4] Includes the estimated timing and amounts of payments for rent and tenant improvements associated with build-to-suit lease arrangements and equipment lease arrangements that have not been placed in service and digital media content liabilities associated with long-term digital media content assets with initial terms greater than one year.

[5] Deferred tax assets related to net operating losses and tax credits are presented net of tax contingencies.

[6] Excluding interest, current finance lease obligations of $99 million and $144 million are recorded within “Accrued expenses and other” as of December 31, 2015 and 2016, and $1.7 billion and $2.4 billion are recorded within “Other long-term liabilities and other” as of December 31, 2015 and 2016.